.left-content {
	float: left;
	width: 640px;	
}

.right-ads {
	zbackground: none repeat scroll 0 0 #EFEFEF;
    float: left;
    height: 250px;
    margin-bottom: 30px;
    width: 300px;
    text-align: center;
    font-size: 22px;
}